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Activate a 4-stage coding discipline framework that forces Claude to plan before coding, isolate changes on a branch, write tests first, and self-review output twice before presenting it.
Passed 19 of 22 test cases with the skill, and 9 of 22 without it.
and 11 more in the full report
11 fixed8 passed either way2 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
Activate superpowers mode for my session now.
| Checked | Without skill | With skill |
|---|---|---|
| The response confirms that superpowers mode is active. | Passed | Passed |
| The response lists the four stages and asks what building task to start. | Missed | Passed |
The instructions your model reads when the skill loads.
Stop Claude from shipping the first thing it writes. Superpowers mode locks Claude into four stages — Plan, Isolate, Test First, Double Review — so that what it presents at the end is actually right.
The default problem: Claude sprints out of the gate, writes the whole thing in one shot, and it looks great — until someone runs it. It doesn't plan. It doesn't test. It doesn't verify. The result: code that breaks on edge cases, debugging rounds that burn tokens, and rework that costs more than doing it right the first time.
Credit: Inspired by a skill from Nate Herk's YouTube channel — adapted and extended for this library.
No inputs required. Superpowers activates on command, then applies to whatever coding task follows.
Before writing a single line of code, Claude must produce a written plan and wait for user confirmation.
Plan format:
PLAN
════
TASK
[One-sentence restatement of what was asked. If anything is ambiguous, flag it here before proceeding.]
APPROACH
[2–4 sentences describing the implementation approach and key decisions. If there are multiple valid approaches, briefly explain why this one was chosen.]
FILES TO CREATE OR MODIFY
- [path/to/file.ts] — [what changes: create / modify / delete — one line reason]
- [path/to/file.ts] — [what changes]
EDGE CASES I WILL HANDLE
- [Edge case 1]
test cases passed, vs 9 / 22 without
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